Type-writing machine.



G. B. GORGORAN.

TYPE WRITING MAOHINE.

APPLIOATION FILED MAY 24, 1912.

Patented Dec. 22, 1914.

IIII

I e n chines, and more particularly to line-spacing continues ,3.GORGORAN, or NEW-Yuan, iii. Y.. Assi'enon' T UNDERWOOD TYPE-WRITERGOMPANY, or nEwYonmN; Y., A CORPORATIONQF DELAWARE.

I TYPE-XVBITING. MACHINE.

Specification of Letters Patent.

Patented net. 22, 19M.

Application filed May 24, 1912. Serial No. 699.370.

To all whom it may concern:

Be it known that I, CORNELIUS B. Con- CORAN, a citizen of theUnitedStates, residing in borough of Bronx, city of New York, in thecounty of New York and State of New York, have invented certain new anduseful Improvements in Type-VVnting Machines, of which. the following isa specification. v

This invention relates to typewritingmamechanisms wherein the platen maybe released from the line-space Wheel and ad-' justed relativelytheretoso as to move the paper a. fraction of a full line-space Theprincipal object of this invention is to provide between the platen andthe linespace wheel, a connection which will permit anv desiredadjustment of the platen relatively to the line-space wheel, whichconnection in every position of adjustment is firm enough to preventaccidental slip between these parts in the normal operation of themachine, the connection being also neat in appearance and easilyapplicable to existing types of machines.

The line-space wheel is loose and may have rigidly connected thereto aninternal or annular gear meshing with a pinion mounted upon an armpivoted on a plate connected to the platen. Mounted on this plate may bea pair of toggles carrying a clutch shoe adapted to frictionally engagethe grooved periphery of a disk fixed to the pinion. A wedge may bebetween the oints of the toggles, which wedge is normally forced in by aspring to keep the clutch shoe tightly in contact with the grooved disk,thereby also forcingthe pinion firmly into mesh with the annular gear,thus eliminating any lost motion which might arise between the pinionand gear. Moreover, any

force exerted on the platen to rotate the same relatively to theline-space wheel, and hence to rotate the pinion about the axis, alsotends to increase the toggle effect so as to force the clutch shoe stillmore firmly into engagement with the grooved disk.

Other features and advantages will hereinafter appear. p

In the accompanying drawings, Figure 1 is a fragmentary perspective viewof the line-space mechanism of an Underwood writing machine with thepresent invention applied thereto. Fig. is a sectional end Iillustrating view, partly broken away, illustrating the position of theparts when the clutch is set. Fig. 3 is a view similar to Fig. 2, illustrating the position of parts when the clutch is released. Fig. is asectional elevation the clutch operating device forced outward .inposition to set the. clutch. Fig. 5 is a view similar to Fig. 4,illustrating the clutch operating device forced inward into position torelease the clutch. Fig. 6 is a detail perspective view illustrating thevarious parts of theclutchmechanism detached from each other. i i

The usual line-space operating lever 1 is mounted on the carriage .2 ofa typewriting machine and actuates a bar 3 carrying a pawl -fi.-engaging the teeth 5 of liiicsrace. wheel 6 on the platen axle ,7 uponwhich is fixed the platen S. Detcnt 5) engaging the teeth of theline-spacc wheel holds the latter in adjusted position, for the ordinaryline-spacing. All of this mechanism is. found in the usual type ofUnderwood writing machine.

. The line-space wheel 6 is loose upon the axle 7 and is clutched to andunciutched therefrom as follows: from the platen turning seated in arecess 13 of the hub or sleeve 1 1- of the knob. Connected tofinger-piece 11 is a pair of rods 15 passing freely through apertures 16formed in the knob. At their inner ends these rods are secured to acollar 17 secured to a sleeve JR slidably mounted on the platen axle,The inner end of this sleeve is formed 'intoa Projecting outward knob 10is a finger piece 11, held outwardly by a spring 12 wedge 19 havingoutwardly inclined faces l9 passing through an opening 9.1 formed in aplate 20 fixed to the platen shaft. Pivoted on plate 20 is a pair ofarms 99 having pivoted thereto another pair of arins 29 is providedwhich forces the arms27 outward, thus normally holding the pinionyieldablv in mesh with the annular gear.

It will be seen that the arms 22 and 23 form a pair of toggles which areengaged ad acent their knees by the inclined faces 19 of the wedge 19.The spring 12 normally holds the finger-piece 11 outward, thus forcingthe inclined faces 19 of the wed e into engagement with the toggles,

' line-space wheel.

tending to straighten them out and to force the clutch shoe 24 firmlyinto engagement with the grooved disk.. The pinion- 26 is thus held fromrotation about its axis, and is brought tightly into mesh with the teethof the annular gear 28. The annular gear in its motion then carries withit the plate 20, axle 7 and platen 8 fixed thereto. The gear 28 thusforms a driving member operating through the driven member or pinion 26to rotate the platen as a unit with the By reason of the tight meshbetween the annular gear and pinion, all lost motion between thesemembers is avoided, and the platen is thus held rigidly I to the linespace wheel. When the'opera tor desires to disengage the platen from thethe clutch shoe and to swing arms 23, thus giving rise to a toggleaction tending to force the shoe still more firmly into engagement withthe grooved disk. Suitable means is provided for guiding the toggles andclutch shoe so as to maintain them in alinement with the grooved diskand to take up the thrust of the wedge. This means consists of a plate30 straddling the platen axle and fastened to plate 20 at any suitablepoint as to bosses 31 and 32 projecting therefrom, to the latter ofwhich bosses arms 27 are also pivoted.

A cup 33 may be provided to inclose the parts of the clutch mechanism.This cup may be attached in any suitable manner to the line-space wheel,as by being threaded or screwed to the extension of the annular gear. I

Variations may be resorted to within the scope of the invention, andportions of the I improvements may be used without others.

Certain of thefeatures herein disclosed are claimed in application No.637,049, filed July 6, 1011, including the large gear, the pinion inmesh therewith, and means for preventing rotation of the pinion upon itsown axis, thereby locking the line-space wheel and platen together; andin application No. 772,545, which is a division of 1. In a typewritingmachine, a platen, a

line-space wheel, a gear secured to said wheel, a pinion mounted so asto be movable into positions to tightly or loosely mesh with the gear,said pinion being connected to the platen shaft, and means movable intoand out of braking connection with said pinion, said means also movingsaid pinion bodily into tight mesh with said gear.

2. In a typewriting machine, a platen, a line-space wheel, a gearsecured to said wheel, a pinionmeshing with the gear, a brake wheel ordisk secured to the pinion, a clutch shoe movable into and out ofengagement with the brake disk, and toggle mechanism for actuating theshoe.

3. In a typewriting machine, a platen, a line-space wheel, a gearsecured to said wheel, a pinion meshing with the gear, a brake wheel ordisk secured to the pinion, a clutch shoemovabl into and out ofengagement with the brake disk, a toggle for actuating the shoe, and aWedge for operating the toggle.

4. In a typewriting machine, a platen, a line-space wheel, a gearsecured to said wheel, a pinion mounted so as to be movable intopositions to tightly or loosely mesh with the gear, said pinion beingconnected to the platen'shaft, means movable into and out of brakingconnection with said pinion, said means also moving said pinion bodilyinto tight mesh with said gear, and a spring for operating said means.

In a typewriting machine,a platen axle, a line-space wheel, a gearsecured to said wheel, a pinion meshing with said gear, a support forsaid pinion, said support being movable transversely to the platen axle,a clutch shoe movable into and out of connection with the pinion, andtoggle mechanism for actuating the shoe.

6. In a typewriting machine, aplaten axle, a line-space wheel, a gearsecured to said wheel, a pinion meshing with said gear, a support forsaid pinion, said support being movable transversely to the platen axle,a clutch shoe movable into and out of connection with the pinion, togglemechanism for actuating the shoe, and a wedge for operating the toggle.

7 In a typewriting machine, a platen axle,

a line-space wheel, a gear secured to said wheel, a pinion meshing withsaid gear, a support for said pinion, said support being movabletransversely to the platen axle, a clutch shoe movable into and out ofconnection with the pinion, and a pair of toggles for actuating theshoe, the latter being mounted on said toggles.

Ina typewriting machine, a platen axle, a line-space wheel, aninternally toothed gear secured to said wheel, a pinion m hing with saidgear, a support for said pinion, said support being movable transverselyto the platen axle,, a clutch shoe movable into and out of connectionwith the pinion, a pair of toggles for actuating the shoe, and a wedgeforspreading said toggles.

9. In a typewriting machine, the combina tion of a platen, a line'spaoewheel, a gear secured to said wheel, a pinion meshing with said gear, asupport for said pinion, said support being movable transversely to theplaten, a clutch shoe movable into,and out of connection with thepinion, toggle mechanism for actuating the shoe', and means for guidingthe shoe in. its movement.

10. In a typew-riting machine, a platen axle, a linespace wheel, anannular gear secured to said wheel, a plate secured. to the axleadjacent to the wheel, arms pivoted on said plate, a pinion rotatablymounted in said arms and meshing with said gear,apair of toggles mountedon said plate, a clutch shoe carried by said toggles, a wedge passingthrough said plate and engaging said toggles, aplaten rotating knobsecured to the platen axle, and means projecting outwardly from saidknob, and connected to said wedge for operating the same.

11. In a typewriting machine, a platen axle, a line-space Wheel, anannular gear socured to said wheel, a plate secured to said axleadjacent to the wheel, arms pivoted on said plate, a pinion rotatablymounted in said arms and meshing with said gear, a pair of togglesmounted on said plate, a clutch shoe carried by said toggles, a platesecured to said first mentioned plate and spaced therefrom for guidingsaid toggles, a wedge passing through said first mentioned plate andengaging said toggles, a platen rotating knob secured to the platenaxle, and means projecting outwardly from said knob, and COIIIH'H ed tosaid wedge for operating the same.

12. In a typewriting machine, a platen axle, a line-space wheel, a gearsecured to said wheel, a pinion meshing with the gear,

,a peripherally grooved friction wheel or disk secured to the pinion, awedge faced clutch shoe movable into and out of engagement with the'l'IlCtlOIl disk, and toggle mechanism for actuating the shoe.

13. In a ftypewriting machine, a platen axle. a line-space wheel, a gearsecured to said wheel, a pinion radially movable with respect to thegear and yieldably held to' mesh therewith, a peripherally groovedfric-' tion wheel or disk secured to the pinion, a wedge faced clutchshoe movable into and out of engagement with the friction wheel, andtoggle mechanism for actuating the shoe.

14. In a typewriting machine, the combination of a platen axle, a platensecured thereto, a line-space wheel, an annular gear secured to saidWheel, a pinion within said gear and movable into'tight or loose meshwith the gear, said pinion being eccentrically connected to the platenaxle, and means movable into and out of clutching connection with saidpinion, said means also moving said pinion bodily into tight mesh withsaid gear.

15. In a typewriting machine, the combination of a platen, a line-spacewheel, a gear secured to said wheel, a pinion meshing with the gear, afriction wheel or disk secured to the pinion, a clutch shoe movable intoand out of engagement with said disk, and means to actuate said shoe.

16. In a typewriting machine, the combination with a platen and aline-space wheel, of a train of connections connecting them andcomprising a gear, a pinion in mesh with the gear, a friction disksecured to the pinion, and a clutch .shoe movable into and tion with aplaten and a line-space wheel,

ofmeans connecting them and comprising an annular gear, a pinion meshingthere with, means connected with said pinion and forming a clutchsurface, a cooperating clutch member, and mechanism to move the latterinto and out of engagement with said clutch surface.

19. In a typewriting-machine, the combination with a platen axle, of aline-space wheel loose thereon, an internally toothed gear connected tothe line-space wheel, a pinion meshing with said gear, a swinging membercarrying said pinion and pivoted eccentrically of the platen axle to amember rotating with the axle, and friction mechanism for holding thepinion against rotation on its axis.

20. In a typewriting machine, the combination with a platen axle, of aline-space wheel loose thereon, an ,internally toothed gear connected tothe line-space wheel, a,

eccentrically of the platen axle to a member rotating with the axle, afriction disk carried by said pinion, a brake shoe, and mechanism tomove the brake shoe into and out of engagement with said friction disk.

21. In a typewriting machine, the combination With a platen and aline-space wheel,

of means connecting them and comprising an annular gear, a pinion inmesh with said gear and movable in a substantially radial direction, afriction disk carried by said pinion, a brake shoe movable in asubstantially radial direction to grip said disk and also to jam thepinion against the annular gear, and mechanism to operate the brakeshoe.

22. In a typewriting machine, the combination with a platen axle, aplaten secured thereto and a line-space Wheel loose on the axle, ofanannular gear carried by the line space wheel, a plate fixed to theplaten axle, a pinion in mesh with the annular gear, arms carrying saidpinion and pivoted to said plate eceentrically of the axle, a frictiondisk carried by said pinion, a brake 'shoe, toggles connecting the brakeshoe and said plate, and a wedge for actuating the toggles.

23. In a typewrltlng maclnne, the combination with a platen and aline-space wheel, of a connecting train comprising an intermeshing gearand pinion, a friction disk secured to said pinion, a clutch shoemovable into and out of engagement with said disk, and means to operatesaid shoe and simultaneously force the members of said train together.

24. In a typewriting machine, the combi nation with a platen, of aline-space wheel, a train connecting them and comprising intermeshinggearing and a friction clutch, said clutch comprising a member rotatablewith a member of said gearing and an engaging member, and means tooperate the latter.

25. In a typewriting machine, the combination with a platen, of aline-space wheel, a train connecting them and comprising inter-meshinggearing and a friction clutch, said clutch comprising a member rotatablewith a member of said gearing and an engaging member, and togglemechanism formoving the latter into and out of frictional engagementwith the rotatable member.

CORNELIUS B. CORCORAN. Vitnesses':

JULIUS DUcKsTIxn. Trrns H. ICONS.

